This is old news but still worth bringing back up. It is an aricle about a cuprachabra like creature killed in South Texas.http://www.woai.com/news/local/story.aspx?content_id=fae91f84-a264-4ac3-8ea4-9097690cdefc

But the article also says the deer do NOT have long rat like tails such as this creature did. And other pictures show claws and not cloven hooves on the critter. Still, it's a strange deal any way you look at it.